v_shortname: Switching amplifier, Device offers intrinsically safe circuits for device protection level: Ga , Gb , Gc , Da , Db , Dc , Ma , Mb, Device offers intrinsically safe circuits for division: Div. 1 , Div. 2, Device suitable for installation in division: Div. 2, Signal type: Binary input, Number of channels: 4, Field side device: NAMUR sensor, potential-free contact, Control side type: Relay (normally open), Transmission direction: to the control, Functions: 2:1 method, Line fault monitoring, Reversible direction of action, Supply: 24 V DC, Supply connection: Terminals or Power Rail, Connection type: Screw terminals, Housing width: 20 mm, Ambient temperature: -20 ... 60 °C (-4 ... 140 °F)